简单悬挂的状态方程中采用的是()跨距。

题型:填空题

问题:

简单悬挂的状态方程中采用的是()跨距。

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题型:填空题

左手定则中,拇指所指的方向是()。

A.电流方向

B.磁力线方向

C.受力方向

D.感生电流方向

题型:填空题

Fifty people died, over 11,000 were injured, and 100,000 houses were heavily damaged or destroyed in an earthquake that struck North China's Hebei Province.

The quake, measuring 6. 2 on the Richter scale (里氏6 .2级) , hit the area 220km northwest of Beijing at 11: 50 a. m. on January 10, 1998.

Scientists made a report of the recent quake. They said that the area of northwestern Beijing, the joint of Shanxi and Hebei Provinces and the Inner Mongolia (内蒙古) were most easily attacked by earthquakes measuring 6 to a bit over 7 on the Richter scale.

However, scientists did not see the recent earthquake earlier. Clouds covered a large area in the northern part of North China before the earthquake and experts say that this prevented satellites from correctly watching the temperature at the correct altitude (纬度).

Experts say that in the last ten years, about 305 earthquakes have taken place in China with 9 measuring over 7 on the Richter scale, 60 measuring over 6, and 236 measuring over 5.

Tens of thousands of people died or were injured. Loss(损失) valued over 10 billion yuan.

小题1:When the earthquake attacked the area, most people there were unlikely(不太可能的)to ____.

A.sleep in bed

B.work in the fields

C.walk in the streets

D.stay at home小题2:The report shows that about nine earthquakes in the past ten years are measured over ____ on the Richter scale.

A.7

B.5

C.9

D.6小题3:It can be inferred(推断) from the report that the damage caused by the earthquakes could be much less heavy if ____.

A.all the people stayed outside

B.the earthquake happened at midnight

C.the people had been warned earlier

D.the earthquake scale was lower than 6. 2 only小题4:Which of the following can be reasonable except ____.

A.We can not stop earthquakes

B.Scientists are working hard at the researches on earthquakes

C.We can do our best to have fewer damages than ever

D.Nothing can be done on earthquakes

题型:填空题

检查上升管挂料情况时要戴好防护面具。

题型:填空题

机动车在狭窄的坡路会车时,正确的会车方法是什么

A.下坡车让上坡车

B.坡顶交会时距离坡顶远的一方

C.上坡车让下坡车

D.下坡车已行至中途而上坡车未上坡时,让上坡车

题型:填空题

其片剂在潮湿环境中可生成二水合物,使片剂硬化,导致溶解和吸收差,从而降低药效的药物是

A.苯妥英钠
B.苯巴比妥
C.地西泮
D.卡马西平
E.氟哌啶醇

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